The new wrappers will add more safety when converting an address to a
frame number (either machine or guest). They are already existing for
Arm and could be useful in common code.
Signed-off-by: Julien Grall <julien.gr...@arm.com>
---
Changes in v2:
- Implement it in arch specific rather than in common code. Hence
rename the patch.
Cc: Andrew Cooper <andrew.coop...@citrix.com>
Cc: Jan Beulich <jbeul...@suse.com>
---
xen/include/asm-x86/page.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/xen/include/asm-x86/page.h b/xen/include/asm-x86/page.h
index cde5c6b89b..45ca742678 100644
--- a/xen/include/asm-x86/page.h
+++ b/xen/include/asm-x86/page.h
@@ -250,6 +250,10 @@ void copy_page_sse2(void *, const void *);
/* Convert between frame number and address formats. */
#define __pfn_to_paddr(pfn) ((paddr_t)(pfn) << PAGE_SHIFT)
#define __paddr_to_pfn(pa) ((unsigned long)((pa) >> PAGE_SHIFT))
+#define gfn_to_gaddr(gfn) __pfn_to_paddr(gfn_x(gfn))
+#define gaddr_to_gfn(ga) _gfn(__paddr_to_pfn(ga))
+#define mfn_to_maddr(mfn) __pfn_to_paddr(mfn_x(mfn))
+#define maddr_to_mfn(ma) _mfn(__paddr_to_pfn(ma))
/*
* We define non-underscored wrappers for above conversion functions. These are
--
2.11.0
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